Liberty

The Liberty Project.

Table of Contents

• Development resources
• Introduction
• Dependencies

Development resources

• GitHub: https://github.com/Liberty-Chain/LibertyChain

Introduction

Liberty (code name LBT) is an anonymous cryptocurrency created in 2014 by anonymous hacker code name "L", which focuses on privacy, decentralization and extensibilitylbt is committed to becoming an irreplaceable, untraceable, completely anonymous and decentralized encrypted digital currency compared with Bitcoin and its bifurcation, LBT has a higher degree of anonymity. As a decentralized anonymous network system based on blockchain, at the beginning of its establishment, Liberty tried to build a free community autonomous system that can better serve users, a free world that is completely autonomous and belongs to every participant. Liberty is based on blockchain technology and takes decentralized anonymity as its design concept in principle, a "private internet" has been established on distributed nodes and is open to everyone on this basis, Liberty builds a perfect distributed encryption network with precise and rigorous functional design and user-friendly experience, and finally builds a decentralized blockchain consensus society. The strong initial internal structure of Liberty, its internal financial balance, community promotion, business interconnection, value concentration and network expansion will break the solidified idea behind centralized business. Most cryptocurrencies currently exist have transparent and searchable blockchain, including Bitcoin and Ethereum, which means that anyone in the world can view any transaction the address of coins can be associated with individuals in the physical world liberty uses encryption technology to hide sending and receiving addresses and transaction amounts.

Dependencies

The following table summarizes the tools and libraries required to build. A few of the libraries are also included in this repository (marked as "Vendored"). By default, the build uses the library installed on the system and ignores the vendored sources. However, if no library is found installed on the system, then the vendored source will be built and used. The vendored sources are also used for statically-linked builds because distribution packages often include only shared library binaries (.so) but not static library archives (.a).

Dep	Min. version	Vendored	Debian/Ubuntu pkg	Arch pkg	Void pkg	Fedora pkg	Optional	Purpose
GCC	4.7.3	NO	build-essential	base-devel	base-devel	gcc	NO
CMake	3.5	NO	cmake	cmake	cmake	cmake	NO
pkg-config	any	NO	pkg-config	base-devel	base-devel	pkgconf	NO
Boost	1.58	NO	libboost-all-dev	boost	boost-devel	boost-devel	NO	C++ libraries
OpenSSL	basically any	NO	libssl-dev	openssl	libressl-devel	openssl-devel	NO	sha256 sum
libzmq	4.2.0	NO	libzmq3-dev	zeromq	zeromq-devel	zeromq-devel	NO	ZeroMQ library
OpenPGM	?	NO	libpgm-dev	libpgm		openpgm-devel	NO	For ZeroMQ
libnorm[2]	?	NO	libnorm-dev				YES	For ZeroMQ
libunbound	1.4.16	YES	libunbound-dev	unbound	unbound-devel	unbound-devel	NO	DNS resolver
libsodium	?	NO	libsodium-dev	libsodium	libsodium-devel	libsodium-devel	NO	cryptography
libunwind	any	NO	libunwind8-dev	libunwind	libunwind-devel	libunwind-devel	YES	Stack traces
liblzma	any	NO	liblzma-dev	xz	liblzma-devel	xz-devel	YES	For libunwind
libreadline	6.3.0	NO	libreadline6-dev	readline	readline-devel	readline-devel	YES	Input editing
ldns	1.6.17	NO	libldns-dev	ldns	libldns-devel	ldns-devel	YES	SSL toolkit
expat	1.1	NO	libexpat1-dev	expat	expat-devel	expat-devel	YES	XML parsing
GTest	1.5	YES	libgtest-dev[1]	gtest	gtest-devel	gtest-devel	YES	Test suite
ccache	any	NO	ccache	ccache	ccache	ccache	YES	Compil. cache
Doxygen	any	NO	doxygen	doxygen	doxygen	doxygen	YES	Documentation
Graphviz	any	NO	graphviz	graphviz	graphviz	graphviz	YES	Documentation
lrelease	?	NO	qttools5-dev-tools	qt5-tools	qt5-tools	qt5-linguist	YES	Translations
libhidapi	?	NO	libhidapi-dev	hidapi	hidapi-devel	hidapi-devel	YES	Hardware wallet
libusb	?	NO	libusb-1.0-0-dev	libusb	libusb-devel	libusbx-devel	YES	Hardware wallet
libprotobuf	?	NO	libprotobuf-dev	protobuf	protobuf-devel	protobuf-devel	YES	Hardware wallet
protoc	?	NO	protobuf-compiler	protobuf	protobuf	protobuf-compiler	YES	Hardware wallet
libudev	?	No	libudev-dev	systemd	eudev-libudev-devel	systemd-devel	YES	Hardware wallet

[1] On Debian/Ubuntu libgtest-dev only includes sources and headers. You must build the library binary manually. This can be done with the following command sudo apt-get install libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv libg* /usr/lib/ [2] libnorm-dev is needed if your zmq library was built with libnorm, and not needed otherwise

Install all dependencies at once on Debian/Ubuntu:

sudo apt update && sudo apt install build-essential cmake pkg-config libssl-dev libzmq3-dev libunbound-dev libsodium-dev libunwind8-dev liblzma-dev libreadline6-dev libldns-dev libexpat1-dev libpgm-dev qttools5-dev-tools libhidapi-dev libusb-1.0-0-dev libprotobuf-dev protobuf-compiler libudev-dev libboost-chrono-dev libboost-date-time-dev libboost-filesystem-dev libboost-locale-dev libboost-program-options-dev libboost-regex-dev libboost-serialization-dev libboost-system-dev libboost-thread-dev ccache doxygen graphviz

Install all dependencies at once on macOS with the provided Brewfile: brew update && brew bundle --file=contrib/brew/Brewfile

Cloning the repository

Clone recursively to pull-in needed submodule(s):

$ git clone https://github.com/Liberty-Chain/LibertyChain.git

Build instructions

Liberty uses the CMake build system and a top-level Makefile that invokes cmake commands as needed.

On Linux and macOS

• Install the dependencies

• Change to the root of the source code directory, change to the most recent release branch, and build:

  cd LibertyChain
  make release -j4

  Optional: If your machine has several cores and enough memory, enable parallel build by running make -j<number of threads> instead of make. For this to be worthwhile, the machine should have one core and about 2GB of RAM available per thread.

  Note: The instructions above will compile the most stable release of the Liberty software. If you would like to use and test the most recent software, use git checkout master. The master branch may contain updates that are both unstable and incompatible with release software, though testing is always encouraged.

• The resulting executables can be found in build/release/bin

• Add PATH="$PATH:$HOME/liberty/build/release/bin" to .profile

• Run Liberty with libertyd --detach

• Optional: to build statically-linked binaries:

  make release-static

Dependencies need to be built with -fPIC. Static libraries usually aren't, so you may have to build them yourself with -fPIC. Refer to their documentation for how to build them.

On Windows:

Binaries for Windows are built on Windows using the MinGW toolchain within MSYS2 environment. The MSYS2 environment emulates a POSIX system. The toolchain runs within the environment and cross-compiles binaries that can run outside of the environment as a regular Windows application.

Preparing the build environment

• Download and install the MSYS2 installer, either the 64-bit or the 32-bit package, depending on your system.

• Open the MSYS shell via the MSYS2 Shell shortcut

• Update packages using pacman:

  pacman -Syu

• Exit the MSYS shell using Alt+F4

• Edit the properties for the MSYS2 Shell shortcut changing "msys2_shell.bat" to "msys2_shell.cmd -mingw64" for 64-bit builds or "msys2_shell.cmd -mingw32" for 32-bit builds

• Restart MSYS shell via modified shortcut and update packages again using pacman:

  pacman -Syu

• Install dependencies:

  To build for 64-bit Windows:

  pacman -S mingw-w64-x86_64-toolchain make mingw-w64-x86_64-cmake mingw-w64-x86_64-boost mingw-w64-x86_64-openssl mingw-w64-x86_64-zeromq mingw-w64-x86_64-libsodium mingw-w64-x86_64-hidapi

  To build for 32-bit Windows:

  pacman -S mingw-w64-i686-toolchain make mingw-w64-i686-cmake mingw-w64-i686-boost mingw-w64-i686-openssl mingw-w64-i686-zeromq mingw-w64-i686-libsodium mingw-w64-i686-hidapi

• Open the MingW shell via MinGW-w64-Win64 Shell shortcut on 64-bit Windows or MinGW-w64-Win64 Shell shortcut on 32-bit Windows. Note that if you are running 64-bit Windows, you will have both 64-bit and 32-bit MinGW shells.

Cloning

• To git clone, run:

  git clone https://github.com/Liberty-Chain/LibertyChain.git

Building

• Change to the cloned directory, run:

  cd LibertyChain

• If you are on a 64-bit system, run:

  make release-static-win64

• If you are on a 32-bit system, run:

  make release-static-win32

• The resulting executables can be found in build/release/bin

• Optional: to build Windows binaries suitable for debugging on a 64-bit system, run:

  make debug-static-win64

• Optional: to build Windows binaries suitable for debugging on a 32-bit system, run:

  make debug-static-win32

• The resulting executables can be found in build/debug/bin

Running libertyd

The build places the binary in bin/ sub-directory within the build directory from which cmake was invoked (repository root by default). To run in the foreground:

./bin/libertyd

To list all available options, run ./bin/libertyd --help. Options can be specified either on the command line or in a configuration file passed by the --config-file argument. To specify an option in the configuration file, add a line with the syntax argumentname=value, where argumentname is the name of the argument without the leading dashes, for example, log-level=1.

To run in background:

./bin/libertyd --log-file libertyd.log --detach

To run as a systemd service, copy libertyd.service to /etc/systemd/system/ and libertyd.conf to /etc/. The example service assumes that the user liberty exists and its home is the data directory specified in the example config.

If you're on Mac, you may need to add the --max-concurrency 1 option to liberty-wallet-cli, and possibly libertyd, if you get crashes refreshing.